Actuator Guide - Norgren Pneumatics. Motion Control Equipment ...

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CONTENTS Introduction 5 Fundamental designs 5 Single acting cylinders 5 Double acting cylinders 6 Magnetic cylinders 6 Rodless cylinders 6 Rotary actuators 6 Clamping cylinders 7 Bellows 7 Cylinder sizing for thrust 8 Useable thrust 8 Clamping applications 9 Dynamic applications 9 Piston rod buckling 9 Speed control 9 Increasing speed 12 Cycle times 12 Cylinder air consumption 13 Seals 14 ‘O’ ring piston seals 14 Cup seals 15 ‘Z’ rings 15 ‘O’ ring barrel seals 15 Cushion seals 15 Piston rod seals 15 Piston rod bellows 15 Extreme operating temperatures 16 Wear ring 16 Cushion design 16 Shock absorbers 17 Standards 18 Non standard dimensions 18 Types of construction 19 Sealed for life 19 Micro cylinders 19 Round line cylinders 19 Small bore ISO 19 Compact cylinders 12-40mm bore 19 3 Serviceable 20 Light and medium duty 20 Compact cylinders 50-100mm bore 20 ISO/VDMA profile 20 ISO/VDMA (exposed tie rod) 20 Heavy Duty 20 Mountings 21 Rigid mountings 21 Articulated mountings 21 Installation 22 Non rotational guiding 22 Locking 23 Rodless cylinders 24 Rodless cylinder with brake 24 Integrated valves 24 Heavy duty rodless cylinder 25 Cylinder variants 25 Through rod 25 Multi position 25 Tandem 25 Duplex 26 Custom piston rod end 26 Extreme operating temperatures 26 Special Purpose <strong>Actuator</strong>s 26 Double stroke cylinders 26 Positioners and servo cylinders 27 Open loop applications 27 Closed loop applications 27 In line positioners 28 Servo cylinders 29 Universal positioner 29 Hollow piston rod cylinders 30 Impact cylinders 31 Principal of operation 31 Installation 32 Common terminology variants 32
LIST OF ILLUSTRATIONS Adjustable cushion cylinder 6 Adjustable shock absorber 42 Banjo flow regulators 25 Bellows 14 Braking unit 72 Calculating equivalent mass 43 Closed loop control 84 Compact cylinder 47 Compact guided cylinder 62 Conventional flow regulators 24 Cushion seal 36 Cycle times 28 Cylinder installation arrangements 20 Detail of sealing strip section 68 Double acting clamp cylinder 13 Double acting non cushioned cylinder 4 Double rack and pinion 11 Double stroke (fixed carriage design) 81 Duplex cylinder 79 Effective length, centrally mounted cylinder 19 Effective length, rear mounted cylinder 18 Energy graph 94 Energy ratings 92 External cushioned circuit 40 External guide 70 Fixed cushion cylinder 5 Fixed range positioner 85 Four pillar frame 96 Full and restricted port aperture 22 Heavy duty cylinder 51 Heavy duty rodless cylinder 75 Hollow rod cylinder 91 Impact cylinder and valve 93 Integrated valve 73 Internal guide 69 ISO guide block 63 ISO guide block with locking units 64 ISO RM/8000 series 46 Locking unit 66 Long stroke 57 M/29000 detail 87 M/30000 detail 86 Magnetic cylinder 7 Main components of a cylinder 1 Maximum stroke length 21 Micro cylinder 44 Mountings for ISO/VDMA cylinders 53 Mountings for small bore ISO cylinders 52 4 Non adjustable unit 41 Non-rotating VDMA 61 ‘O’ Ring section 32 Offset load bending moment 59 Open loop 83 Out of alignment bearing 58 Piston and rod diameters 15 PRA/8000/M cylinder 49 Pre-exhaust circuit 29 Precision roller guide 71 Proportional band graph 90 Quick exhaust valve section 27 RA/8000/M cylinder 50 Rack and pinion 10 Rigid mounting styles 54 Rod bellows 38 Rod/wiper seal 37 Rodless cylinder 8 Rodless cylinder mountings 74 Rotary vane 9 Round line cylinders 45 Section of a ‘Z’ ring 34 Section of a cup seal 33 Section of barrel seal 35 Section of Lintra 67 Sequence of cushioning 39 Serviceable compact 48 Single acting clamp cylinder 12 Single acting cylinder 2 Single acting cylinder with no spring, push and pull 3 Slide unit 65 Speed graph 26 Speed/pressure graph 23 Swivel mounting styles 55 Table of consumption 30 Table of thrust and pulls, single acting cylinders 16 Table of thrust and pulls, double acting cylinders 17 Tandem cylinder 78 Three stages of operation 95 Three thread types 80 Through rod 76 Twin stroke principle 82 Two cylinder multi position 77 Types of seals 31 Universal positioner 88 Weight of cylinder 60 Weight on the end of the rod 56 Zero adjustment graph 89
Page 1: ● Design theory ● Applications
Page 5 and 6: DOUBLE ACTING CYLINDERS Double acti
Page 7 and 8: CYLINDER SIZING FOR THRUST The theo
Page 9 and 10: The effective length and the suppor
Page 11 and 12: There are however applications that
Page 13 and 14: Clearly during the operation of ind
Page 15 and 16: particles that will increase the we
Page 17 and 18: Shock absorbers are selected by the
Page 19 and 20: SERVICEABLE LIGHT AND MEDIUM DUTY T
Page 21 and 22: INSTALLATION The mechanics of cylin
Page 23 and 24: RODLESS CYLINDERS This design is a
Page 25 and 26: single direction control valve or a
Page 27 and 28: On the pneumatically controlled mod
Page 29 and 30: HOLLOW PISTON ROD CYLINDERS In many
Page 31 and 32: otherwise walk when operated repeat
Page 33 and 34: Notes

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